Effect of Erbium-yttrium, scandium, gallium and garnet (ErYSGG) laser on the bond strength of lithium disilicate ceramics
Abstract
Objectives: To assess the bond strength of LD ceramics with resin composite material and surface conditioning using Er:YSGG laser and HF acid.
Methods: Thirty LD ceramic (Emax, Ivoclar vivadent) discs were prepared using hot pressing technique and treated with hydroflouric acid (Group-1-HF acid) (9%) (n=10) and Er- yttrium, scandium, gallium and garnet laser (Group-2-ER-YSGG laser) (Waterlase iPlus, 10 Hz and power of 0.5 W, pulse duration of 230 μs) (n=10). Ten specimens were left untreated to be included as controls (Group-3-Control). All the specimens were treated with Adper Single Bond adhesive (3MESPE , St. Paul , MN , USA). Multicore buildups (3mmx3mm) were performed using a rubber mold on the ceramic surfaces and cured using LED light-curing unit for 140 sec. All specimens were tested using shear bond test and failure modes were assessed with a stereomicroscope and scanning electron microscope. Data was analysed using ANOVA and Tukey Kramer multiple comparisons test.
Results: The maximum and minimum shear bond strength values were achieved in HF Acid specimens (Group-1) (28.15±4.72 MPa) and control specimens (13.47± 3.14 MPa) respectively. Specimens treated with HF acid showed significantly higher bond strength in comparison to laser treated and control specimens (p<0.01). Laser treated specimens had significantly higher bond strength as compared to controls (p<0.01).
Conclusions: Hydrofluoric (HF) acid treatment showed significantly better outcomes than YSGG laser surface treatment.
doi: https://doi.org/10.12669/pjms.341.13916
How to cite this:Al-Rifaiy MQ. Effect of Erbium-yttrium, scandium, gallium and garnet (ErYSGG) laser on the bond strength of lithium disilicate ceramics. Pak J Med Sci. 2018;34(1):32-36.  doi: https://doi.org/10.12669/pjms.341.13916
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Refbacks
- There are currently no refbacks.